Custom field with default editor

Hello, I would like to have the default wp editor on one of the custom fields. Currently I can have either a text box or text area. How can I add the wp wysiwyg editor instead of a text area.

Also, not needed for this project but will be in the future, how can I add an image upload field via custom press. I have used typed and ACF before but was hoping to keep everything within one plugin (custompress) to avoid development confusion.frustration..

Thanks, Vincent